The only thing carrying that flavour is the smallest thing in the pot
A recipe lists its ingredients as equals. For flavour they are not, and the imbalance has a particular shape: a note is very often carried by exactly one ingredient, and that ingredient is usually tiny.
Across 2,330 recipes we found 11,651 of these sole sources. Their median share of the dish is 2.5% by weight; 62% are under 5% and 47% are under 2%.
That changes what leaving one out does. If three ingredients each bring warmth, dropping one turns the warmth down. If one is the only source, dropping it does not turn anything down — it deletes the note. The question every cook asks at the counter, “I’m out of this, does it matter?”, has a categorical answer far more often than the size of the jar suggests.
Heat is the extreme case
In 1,046 recipes a single ingredient is the only thing bringing heat, and its median share of the dish is 0.2% — 86% of them are under 5%. The entire heat of those dishes hangs on something that would not register on a kitchen scale set to grams.
Sourness is the same story with a larger jar: sole-sourced in 809 recipes at a median 4.6%.
| note | recipes where one ingredient is the only source | median share of the dish | under 5% |
|---|---|---|---|
| heat | 1,046 | 0.2% | 86% |
| spicy aromatic | 950 | 0.2% | 95% |
| funk fermented | 891 | 3.6% | 59% |
| fruity | 817 | 7.6% | 37% |
| sourness | 809 | 4.6% | 52% |
| herbaceous | 770 | 2.5% | 57% |
| citrus | 740 | 2.6% | 75% |
| floral | 725 | 0.9% | 77% |
| earthy | 682 | 7.7% | 43% |
| nutty | 679 | 4.5% | 53% |
| pungent allium | 653 | 1.8% | 63% |
| salinity | 640 | 0.4% | 88% |
| sweetness | 546 | 6.6% | 44% |
| marine briny | 437 | 20.3% | 31% |
| bitterness | 384 | 3.4% | 59% |
| umami | 344 | 20.4% | 25% |
| smoke | 314 | 1.5% | 63% |
| richness | 224 | 10.1% | 36% |
Who does the carrying
The ingredients that most often stand alone are the ones a recipe mentions last and a shopping list treats as optional.
| note | most often its only source |
|---|---|
| heat | black pepper (420), cayenne pepper (88), white pepper (62), pepper (49), red chili flakes (39) |
| spicy aromatic | black pepper (365), freshly ground black pepper (94), cumin (87), ginger (84), white pepper (40) |
| funk fermented | soy sauce (91), parmesan cheese (84), fish sauce (74), sour cream (63), plain yogurt (42) |
| fruity | tomatoes (157), lemon (64), red bell pepper (54), coconut milk (42), tomato paste (40) |
| sourness | tomatoes (108), rice wine vinegar (78), lemon juice (58), lime juice (45), lemon (39) |
| herbaceous | scallions (132), parsley (73), cilantro (58), flat leaf parsley (31), green onions (30) |
| citrus | lemon juice (169), lemon (98), lime juice (89), basil (68), lime (43) |
| floral | ginger (149), basil (64), dry white wine (59), cinnamon (37), honey (36) |
Does the threshold decide the answer?
An ingredient “carries” a note when its registry value for that dimension is at or above 3 on a 0–10 scale. That number is a choice, so here is what happens when it moves. The headline does not depend on it.
| counts as present at | sole sources found | median share | under 5% |
|---|---|---|---|
| 2.0 | 10,134 | 2.4% | 63% |
| 2.5 | 11,651 | 2.5% | 62% |
| 3.0 | 11,651 | 2.5% | 62% |
| 3.5 | 11,323 | 2.7% | 62% |
| 4.0 | 11,323 | 2.7% | 62% |
Honest limitations
- This is a presence measurement and nothing more. It counts how many ingredients carry a note at all; it does not rank how strongly they carry it. For several of these notes — acidity, chilli heat, allium pungency, smoke — our own validation work found the underlying values resolve “has it / does not have it” and nothing finer, so a strength ranking would not be supportable and is not offered.
- Mass share depends on the recipe’s parsed gram weights. 16 ingredient lines across 13 recipes resolve a bunch, head or handful to under 10 g (a head of garlic recorded as 3 g), which understates those ingredients’ share. Small against 11,651 measurements, but real.
- An ingredient being the only flavour source says nothing about what else it does. Something can carry no note at all and still be structurally essential — a leavener, a binder, a thickener.
- 15 recipes were excluded for having fewer than 3 ingredients we could link to the reference set; a very short parse cannot establish that anything is a sole source.
- This describes a 2,345-recipe corpus, roughly 40% of it project-authored. It is a claim about these recipes, not about all cooking.
The data
Every number on this page is a deterministic measurement over the same recipe corpus — nothing here was estimated or embellished. Want to check the work, or run your own analysis? A 250-dish sample of the corpus — ingredients, 18-note flavor profiles, timing, macros — is free to download.
Get the dataset